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23 May 2023 Distributed cryogenic temperature sensing through Brillouin optical frequency-domain analysis
A. Minardo, E. Catalano, R. Vallifuoco, L. Zeni, R. Bernini, M. A. Caponero, A. Castaldo, G. De Marzi, A. Masi, C. Mazzotta, A. Polimadei
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Proceedings Volume 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023); 126432D (2023) https://doi.org/10.1117/12.2678097
Event: European Workshop on Optical Fibre Sensors (EWOFS 2023), 2023, Mons, Belgium
Abstract
We present the results of an experimental campaign aimed at demonstrating the use of a distributed optical fiber sensor based on Brillouin scattering in static and dynamic temperature measurements at cryogenic temperatures (≈ 84 K). The experimental results, obtained through Brillouin Optical Frequency-Domain Analysis (BOFDA) at a spatial resolution of 16 mm, are compared with temperature measurements using thermocouples and fiber Bragg gratings. The distributed sensor is able to capture local temperature variations of ≈ 2 °C at an acquisition rate of 1 Hz.
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A. Minardo, E. Catalano, R. Vallifuoco, L. Zeni, R. Bernini, M. A. Caponero, A. Castaldo, G. De Marzi, A. Masi, C. Mazzotta, and A. Polimadei "Distributed cryogenic temperature sensing through Brillouin optical frequency-domain analysis", Proc. SPIE 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023), 126432D (23 May 2023); https://doi.org/10.1117/12.2678097
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KEYWORDS
Temperature metrology
Temperature distribution
Cryogenics
Fiber Bragg gratings
Optical sensing
Spatial resolution
Sensors
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